Computing attachment for type-writers.



- B. M. DESJARDINS. COMPUTING mncnmgm FOR TY' PE WRITERS. APPLICATION FILED APR. 27. 1904. RENEWED NOV. WI 1912.

15 SHEETS-SHEET l Patented Apr. 29, I919.

H B. M. DES JARDINS..

COMPUTING ATTACHMENT FOR TYPE WR|TERS.'. A'PPLTC AT ION FILED AP R.27, I904- RENEWED NOV. 12,1912.

1,302,464, f T Patented Apr; 29,1919.

I5 SHEETS-STTEET 2- B. M. mas JARDINS. COMPllTiNG ATTACHMENT FOR TYPE WRITERS. APPLICATION FILED, APR. 27. 994- RENEWED NOV;l2|1912.

Patented Apr. 29, 1919.

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I B1M. DESJARDINS. COMPUTING ATTACHMENTFOR TYPE WRITERS. 1' APPLICATION 111211111 11. 21. 19041 RENEWED NOV. 12.1912.

. 1,302,464. I 1 1 Pat- 611161111 11. 29,1919.

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B. M. DES JARDINS."

I COMPl J TING ATTA- CHMENT FOR TYPE WRITERS.

T I APPLICATIQVN FILED A PR.2T. I904- RIENEYWEDTYNOV. 12, [BIZ-j Q 4 1,302,4 4; T Patented Apr. 29,1919.

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B. M. DES JA'RDINS. cqm'rumc ATTACHMENT run TYPE v'mnsns. APPLICATION FI LED APILZT. 1904- RENEWID NOV. 12. 1912.

Patented Ap r. 29,

1919. I 15 Suns-sun s r U K3 K3 anmm @ixw fla MILL. I

B. M. DES JA'RDINS. COMPUTING ATTACHMENT FOR TYPE WRITERS. APPLICATION FILED APR.2T,1904. nzuzwmfuov. 12.1912.

1 302 464. T Patented Apr. 29, 1919.

T T T 1s SHEETS-SHEET 1- 1 a F 9 T 61 6 66 I 77 J8 48 (luck/mu 6 B. M. DES JARDINS.

COMPUTING ATTACHMENT FOR TYPE WRITERS.

APPLICATION FILED APR.?7 1904 RENEWED NOV. 12,1912.

Patented Apr; 29, 1919,

i5 SHEETS-SHEET 9 sprvl. 05s mums; COMPUTING ATTACHMENT FO'R' TYPE WRITERS.' APPLICATION FILED APR. l7 190$- KEMEWED NOV. 12. I912 1,302,464. I Patented Apr. 29,1919." I 1s surs-sr|nm Ire 'mo WASHINGTON,

B. M. DES JARDINS.

COMPUTING ATTACHMENT FOR TYPE WRITER-S. APPkICATION min APR.27. wum nzuswzmuov. l2. I912.

1,302,464. v v Patented A r.29,1919.

Patentgd Apr. 29, 1919.

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B. M. DES JARDINS COMPUTING ATTACHMENT FOR TYPETWRITERS. Pile/mom FILED .21, 1904.: RENEWED npvl 12.1912.

1302,46 1. y Patented Apr.29,1919.

15 SHEETS-SHEET I3.

I I y Y WZL? ATTOR Y B. M. mas JARDIN S. 'CQMPUTING ATTACHMENT FOR TYPE WRITERS. APPLICATION FILED APRUH, I904- RENTEWED NOV. 12,19 12- 1,302,464.

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Patented Apr. 29, 1919.

15 SHEETS-4MB l5.

INVENTOm H 5 Ne E WITNESSES:

ment with the numeral key levers whenever it is desired to use the typewriter indepeudinto engagement with any selected numeral wheel, thus shifting the computing mechanism to register in any predetermined denomination. The carry-over wheels, for this shifting, may be moved out of engagement with the numeral wheels, and the escapement and driving parts for feeding the totalizer casings may be likewise moved to ineffective position, and for so moving the wheels and rendering said escapement ineffective, there may be a'single hand-operated slide which is arranged to thus position them.

Other features and advantages will hereinafter appear.

In the accompanying drawings,

Figure '1 is a, plan view of a Remington typewriting machine showing a computing attachment combined therewith.

Fig. 2 is a front elevation of the adding mechanism as applied to a typewriter, the figure key levers and a part of the typewriter being shown in section.

Fig. 3 is a section about on the line 22 of Fig. 2.

' Fig. 3' is a detail.

Fig. 4 is a bottom plan view of the figure key levers and their connections to'the adding mechanism, the figured ends being shown broken 011 and turned.

Fig. 5 is a rear view of the adding mechanism showing the connections from the key levers for operating the variable stops.

Fig. 6 is a left end view of parts shown in Fig. 5.

Fig. 7 is a right end view, and Fig. 8 a plan view showing the winding mechanism and the levers for setting the adding mechanism according to the denomination of the first figure in the number to be added.

Fig. 9 is a longitudinal sectional view of the variable escapement devices.

Fig. 10 is a front view of part of Fig. 9. Fig. 11 is an end view of the escapement shaft showing an adjusting device.

Fig. 12 is a section on the line 12 of Fig. 9. Figs. 13 and 14 are side and edge views of the escapement stop.

Fig. 15 is a section on the line 15 of Fig.- 9 showing the escapement return spring.

Fig. 16 is a section on the line 16 of Fig. 9 showing the escapement cushioning spring. Fig. 17 is an enlarged longitudinal sec tional view of the register wheels and carrying devices. FiFig.7 18 is a section on the line 18 of g. Fig. 19 is a, section on the line 19 of Fig. 17.

Fig. 20 is a left-hand view of the register. Figs. 21 and 22 are details of the register wheels.

mounted.

Fig. 24 is' a section on the line 24 of Fig. 25 is a section on the line 25 of Fig. 22.

Fig. 26 is a section on the line 26 of Fig. 1.

Fig. 27 is a detail.

Fig. 28 is a perspective of the hand-operated slide.

Fig. 29 is a vertical sectionfthrough the machine. I

Fig. 30 is a plan of two of the-keys of the machine and the type bars connected therewith.

Fig. 31 is a view similar to Fig. 2, but showing the zero key connection.

Fig. 32 is a viewsimilar to Fig. 6, but showing the zero key connection.

Fig. 33 is a view similar to Fig. 5, but

showing the 7 keyoperating its stop.

Fig. 34 is a View similar to Fig. 32, but showing the stop-carrying .mem-ber arrested by the 9 key.

Fig. 35 shows the details of the connection between the tabulating mechanism and the totalizer.

Fig. 36 showsipart of the winding mechanism and the tabulating mechanism.

Fig. 37 shows another part of the tabulating. mechanism.

Fig. 38 shows details of the driving mechanism. r

Fig. 39 is adetail cross section showing the parts as set when the totalizer is to be moved by the tabulating keys.

Fig. 40 shows the connections for swinging the carry-over-wheels during a transverse feed of the totalizer.

Fig. 41 is a cross section viewed from the right of the totalizer in the position'seen in Fig.v 40.

Fig. 42 is a plan view of the releasing slide shown in Fig. 28.

Fig. 43 is a section through the totalizer when the parts are set as in Fig. 39.

Fig. 44 is a section showing the arms to connect the numeral keys to the escapement mechanism.

Fig. 45 is a detail of Fig. 44. The invention is herein disclosed as applied to a Remington typewriting machine, in which alphabet and numeral-key levers 31,

when depressed, swing type-bars 234 upwardly by links, 237, so as to cause type 238' the shaft 46 and the stop Wheel 58 is attached thereto by means of a tongue 76 (see Fig. 9) formed on a flange extension 7 5 of the sleeve 57 forming the hub of the 'stop wheel 58. For adjusting the stop wheel 58, the tongue 76 extends through an opening in a flange 77 formed on the master wheel shaft 46 and is engaged on each side by set screws 78 threaded into said flange 77. Y

The key-operated dogs 81, 82 83, (see Figs. 32 and 34) are formed as levers pivoted at 79*, 79*, 79, and the nose of each of said dogs may be swung into the path of the right-hand index 62 by its rearward end, which underlies one arm of a bell-crank 81 82", 83 Said bell crank 83 is operated from its numeral key-lever 31 by means (see Figs. 5 and 33) of a slide-rod 83 pivoted to said bell crank and extending transversely of the machine. This slide-rod 83 is drawn from the numeral key-lever 31 by means of the bell crank 83, which strikes a pin 253 fast on said slide-rod 83, and is connected to said numeral key-lever by means of a pivoted link 88 depending from said bell crank and attached to a yoke fast to said numeral key-lever.

The plate 79 carrying the dogs 81, 82 83, normally holds said dogs alined with index 62 on the index wheel 61, and in this position when the 1, 2, or 3 numera'l keys are operated, the appropriate dog 81*, 82, or 83 will be swung outwardly so as to arrest the index wheel 61 according to the key operated. For the other numeral keys the plate 79 is arranged to be shiftable so as to move the dogs 81, 82 and 83*, into the path of the index Wheel indexes 63 and 64, according to the number which it is desired to compute; that is to say, the index 62 is used when it is desired to rotate the master wheel three-tenths of a revolution or less; the index 63 is used when it is desired to rotate the master wheel more than three-tenths of a revolution, but not over six-tenths of a revolution; and the index 64 is used when it is desired to rotate the master wheel seven, eight or nine-tenths of a revolution; and the selection of the index 62, 63 or 64 depends entirely on the one of said indexes which the plate 79 causes the dogs 81, 82 and 83 to aline.

For shifting said plate 79, a shift-bar 85 fast thereon carries pins 254 which are arranged to be intercepted as seen in Figs. 5 and 33, by the bell cranks 81', 81, etc. The amount of shifting of said plate 79 depends on the distance from the pivots of said bell cranks to each pin on the bar 85. Said plate 79 is normally drawn to the left, as viewed from behind, by means of a spring 84 fast thereto, assisted by a spring86 encircling said shift-bar 85. i

For example, when the numeral key 7, as seen in Fig. 33, is depressed, its bell crank 81, which corresponds to the bell crank 83", above described, will engage a pin 254 fast on the slide bar 85, fast to said plate 79. This will move the plate 79 to the right, as seen in Fig. 33, so that said plate brings the dogs 83, 82 and 81 into the path of the index 64 and at the same time saidbell crank 81 strikes a pin 253 on the slide bar 81 so as to swing the dog 81 outward into the path of the index 64 and thereby arrest the master Wheel shaft 46. Thus at the same time that the numeral key 31, by means of its underlying lever, is releasing the escapement do holding the master wheel shaft, the eylever is setting the appropriate dog to arrest said shaft when it is rotated the proper number of units.

The seriatim engagement of the master wheel 96 fast on the shaft 46 with the numeral wheels 89 is brought about by a transverse feed of the casing 90 containing said numeral wheels. Said casing is fed to the left on the up-stroke of every numeral key during which stroke the master wheel 96 does not rotate, its rotation having taken place, as described above, on the downwardstroke of the numeral key. For so moving said casing 90 there is fast (see Figs. 2 and 31) on its lower edge a rack bar 117 comprisingteeth 200, which teeth on the rising stroke of the numeral key are arranged to be engaged by a pawl 118 pressed upwardly against them by means of a spring 201, said pawl being operated from the lever 71 by an arm 120 extending rearwardly from said lever and workingin a slot 202 in one arm 203 of a bell crank lever 119 on which said pawl 118 is pivoted. On the down-stroke of the numeral key, the link 39 draws said pawl 118 to the right, so that it engages with the tooth nextto the right of the one which was previously engaged, and then on the upward stroke of the key by said tooth,the computing casing 90 is positively fed to the left by the spring 44, which rocks the shaft 33 to its normal position.

Said computing casing is normally held against accidental transverse movement by means of a locking tooth (see Figs. 3, 29 and 39) 122 lying between teeth 121 forming a rack on the upper edge of said casing 90. With every depression of a numeral key, said locking tooth 122 is swung free of the teeth 121 by the shaft 126 to which it'is fast, said shaft-being swung by a link 124 pivoted to the link 39 at 72 and to a rock arm 125 fast on the shaft 126. Later in the depression of the numeral key a second tooth 204, likewise fast on the rock shaft 126, swings almost instantly into mesh with said teeth 121 so that the computing casing 90 is practically held locked against accidental movement during the whole depression of the numeral key. During said depression, as has been described above, the 

